JPS631034Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to an electric blower used for supplying air to wash containers, bathtubs, etc.

Conventional technology Conventionally, a bubble plate is installed at the bottom of a washbasin container or bathtub that stores hot water or water, and air is supplied to the bubble plate using an electric blower to generate ultrasonic waves when the bubbles burst on the water surface. There are ultrasonic facial beauty machines and in-bath pine massagers that use vibrations to perform cleaning and pine surge effects. Many electric blowers used in such devices are equipped with a commutator. An electric blower equipped with such a commutator generally has a structure in which a suction fan is connected to one end of the rotor and a commutator is attached to the other end. In this type of structure, air sucked in by a suction fan is passed through the inside of the motorized part to cool the motorized part, and the air is then blown to an air supply part such as a container or bathtub equipped with a bubble plate. ing.

That is, although the commutator is exposed, the air flow sucked in by the suction fan passes through the commutator after passing through the inside of the electric part, and is then blown to the air supply part.

Problems that the invention aims to solve: In conventional electric blowers with an exposed commutator, the part where the commutator is located serves as a passage for cooling air, so the carbon brush wear dust generated from the commutator is There is a problem in that it gets mixed into the airflow and causes dirt and clogging of the bubble plate.

Means to solve the problem This idea separates the outside air sucked in from the suction fan into an air path that passes through a commutator and exhausts it, and an air path that directs the air to the air supply section without passing through the commutator. They are separated by a plate.

Function The air sucked in by the suction fan is separated by a separation plate, and the air that does not pass through the commutator section is supplied to the air supply section, so that abrasion dust from carbon brushes etc. is not mixed into the air. It was designed so that it would never happen.

Embodiment An embodiment of this invention will be described based on an ultrasonic facial beauty machine shown in the drawings. First, 1 is a container which is an air supply section. A bubble plate 1a is provided at the bottom of the container 1, and a bottom plate 3 having a through hole 2 is provided.
and a partition plate 4 located below it. A passage 7 is provided on the side of the container 1, which communicates the upper space 5 and the lower space 6, which are bordered by the partition plate 4, at the upper side of the container 1.

Next, a main body case 8 that supports this container 1 is provided. This main body case 8 has a suction hole 9 located on the side and an exhaust hole 1 located at the center of the bottom.
0, an annular mounting portion 11 surrounding the exhaust hole 10 is fixed to the bottom, and a plurality of ribs 12 are formed radially arranged at the top.

Thus, a stator 13 housed in the main body case 8 and a rotor 14 whose axis coincides with the stator 13 are provided. A commutator 1 is located near the lower end of the rotor 14.
5 is provided. A fan case 17 is fixed to the upper part of an upper frame 16 that surrounds the stator 13. A suction fan 18 is constituted by this fan case 17 and blades (not shown) connected to the upper part of the rotor 14. Further, a lower frame 19 that surrounds the commutator 15 and a separation plate 20 that partitions between the stator 13 and the commutator 15 are fixed to the lower end of the upper frame 16 . A through hole 21 is formed on the outside of the upper frame 16,
A through hole 22 is formed in the center of the separation plate 20. The lower end of the lower frame 19 is provided with a filter 23
The fan case 17 is supported by the rib 12 via a support rubber 25 while holding the same.

Next, the rotor 14 is mounted on the lower frame 19.
A bearing 26 and a brush holder 27 that support the lower end of the carbon brush 28 are held, and a carbon brush 28 is held in these brush holders 27. Furthermore, a cover 29 that surrounds the outside of the stator 13 at a predetermined interval is provided and supported by the upper frame 16 and the lower frame 19. An air outlet 30 formed in the upper frame 16 protrudes from the cover 29, and the air outlet 30 and the lower space 6 are communicated through a pipe 31.

In such a configuration, as the suction fan 18 rotates, outside air is sucked from the suction hole 9 into a suction hole (not shown) formed in the center of the fan case 17 and flows downward inside the stator 13. The airflow is separated by the separation plate 20, and on the one hand is passed through the through hole 22 around the commutator 15 and exhausted from the exhaust hole 10, and on the other hand is blown from the through hole 21 through the pipe 31 and the passage 7 to the bubble plate 1a. Therefore, the bubbles emitted from the bubble plate 1a burst on the water surface, and the ultrasonic vibrations generated at that time perform a cleaning action and a pine surge action. Although the air that has passed through the commutator 15 contains abrasion dust from the carbon brush 8, the airflow is not supplied to the container 1, but is purified by the filter 23 and exhausted from the exhaust hole 10.
It is possible to prevent the bubble plate 1a from becoming dirty or clogging. Of course, the water you use to wash your face won't get dirty either. By removing the bottom plate 32 of the main body case 8, the filter 23 can be easily replaced and cleaned.

Note that, as shown in FIG.
The commutator 15 is slidably supported by a rail 36 while being urged in the closing direction by a spring 35, and the screw 37 that pushes the shutter 34 in the opening direction is screwed into the lower frame 19. The amount of air supplied to the container 1 can be increased or decreased by adjusting the amount of air directed to the container 1.

Since this device is constructed as described above, the outside air sucked in from the suction fan is separated by a separation plate into an air path where it passes through the commutator and is exhausted, and an air path where it is supplied to the air supply section without passing through the commutator. Therefore, only clean air can be supplied to the air supply section with a simple structure, and thereby,
Since the abrasion dust generated by the commutator does not mix in the air reaching the air supply section, it has the effect of preventing clogging of the bubble plate when used as a bath pine surger, etc.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a vertical side view, and FIG. 2 is a partial vertical side view showing a modified example of the separation plate. 1... Container (air supply section), 13... Stator,
14...Rotor, 15...Commutator, 18...Suction fan, 20...Separation plate.

Claims (1)

[Scope of utility model registration request] A rotor is provided with a commutator attached to one end and a suction fan attached to the other end, the rotor is attached to the stator along its axis, and the rotor is attached between the stator and the commutator. A separation plate is provided that separates the air sucked in by the suction fan into an air path through which the air passes through the commutator portion to the outside air and an air path through which the air flows toward the air supply section without passing through the commutator portion. An electric blower characterized by: